chap 13 key terms

Question 1

aggregation

Answer 1

Aggregation- The clumping of suspended particles in water until they are heavy enough to settle to the bottom.

Question 2

concentrated solution

Answer 2

Concentrated solution- A solution that has a relatively high ratio of solute to solvent.

Question 3

crystallise

Answer 3

Crystallise- to form solid crystals.

Question 4

dilute solution

Answer 4

Dilute solution- A solution that has a relatively low ratio of solute to solvent.

Question 5

dilution

Answer 5

Dilution- the addition of a solvent to a solution to reduce its concentration.

Question 6

flocculation

Answer 6

Flocculation- A compound, most commonly a polymer, is added to drinking water to bind suspended particles together to aid in aggregation.

Question 7

limestone

Answer 7

Limestone- A mineral composed of calcium carbonate

Question 8

molarity

Answer 8

Molarity- The amount of solute, in moles, dissolved in 1 litre of solution (mol L-1)

Question 9

parts per million (ppm)

Answer 9

Parts per million (ppm)- A unit of concentration which states the number of grams of solute in 1 million grams of solution. It is equivalent to the number of mg of solute per kg of solution.

Question 10

saturated solution

Answer 10

Saturated solution- A solution that cannot dissolve any more solute at the given temperature.

Question 11

seed crystal

Answer 11

Seed crystal- A small crystal from which a large crystal of the same material can typically be grown.

Question 12

solubility

Answer 12

Solubility- A measure of the amount of solute dissolved in a given amount of solvent at a given temperature.

Question 13

solubility curve

Answer 13

Solubility curve- A graph of solubility versus temperature for a particular solute dissolved in a particular solvent.

Question 14

supersaturated solution

Answer 14

Supersaturated solution- An unstable solution that has more solute dissolved at a given temp than a saturated solution.

Question 15

unsaturated solution

Answer 15

unsaturated solution- A solution that contains less solute dissolved at a given temp than a saturated solution.